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'3 Sheets-Sheet 1;

(No Model.)

B. LII-ILL & J. L. CLARK.

BOAT DETAGHING APPARATUS.

' Patented Feb. 13, 1883.

ATTORNEYS.

Phflmlithcgnphar, Washington D. c

3 sheets-sheet 2 (No Model.)

B. J. HILLA& J.-L. CLARK.

BOAT DETACHING APPARATUS.

Patented Feb. 13, 1883.

ATTORNEYS.

wuxhezn hr. Waking! R lUNrrE STATES ATENT FFICFIQ EDWARD J. HILL AND JOSIAH L. CLARK, OF WESTMINSTER, ENGLAND.

BOAT-DETACHING APPARATUS.

SPEGfFIGATION forming part of Letters Patent No. 272,253, dated February 13, 1883.

Application filed September 4,1882. (No model.) Patented in England December 9, 1881, No. 5,380; in in Belgium June 10, 1882.

provement in Apparatus tbr'Detaching Boats,

Buoys, and other Floating Objects; and We do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accom panying drawings, forming part of this application.

Our invention relates to an improved meth- '0d of disengaging boats and other floating ol-jectssuch as bouys-'-when lowered at sea,

by the employment of a float suspended from the boat or buoy, which float, as soon as it reaches the water, causes the disengagement of the boat or other object. We generally cmploy this float in conjunction with the ordinary and well-known slip-hooks, or with other similar contrivances, such as are used for disengaging boats from ships. In conjunction with this float we usually employ a third slip hook or trigger of small dimensions, which serves as the attachment by which the ordinary sliphooks are held and released; or in some cases we allow the float-line itself, when raised by the water, to slacken out the disengaging-line without the intervention of the third trigger. in one form of apparatus we suspend the boat on two single slip or tumbler hooks which are fixed in the ends of the boat and are connected, and at the same time prevented from releasing by a rope or chain which is tightened by means'of a small tackle-line, and while so held the hooks cannot turn over and become disengaged. This connecting rope or chain is attached at one end to the slip-hook in the bow and is led to the other end of the .boat behind the after slip-hook, (where it forms a bight,) and its other end is carried back to the after slip-hook and attached to it in the usual way. The bight of this rope is constantly kept tight by means of the small tackle-line. The free end of this tackle-line, instead of being hitched on acleat in the usual way, is led to .a third slip-hook or trigger fixed at any convenient point aft, and this smaller slip-hook is in turn held closed by the slight strain caused by the weight of a float suspended on a' line. The float hangs a' little below the bottom of the boat, and as soon as itreaohes the water, the

ready to be lowered.

weightbeing taken off, it allows the small sliphook to disengage itself, slackening out the small tackle-line, and this, taking the strain 01f the connecting rope or chain, insures the disengagement of the other hooks. The third slip-hook may be kept locked until the boat is It is evident any form of disengaging apparatus may be so arranged as to work with 2.

France June 9, 1882, and

float in the manner above described; and it is also evident that the liberating-float may be made in different forms, and may be attached to the boat by hinges or guides, or it may assome the form of a plunger working up and down in a tube or well rising from a hole in the bottom of the boat.

In theaccompanyingdrawings we have illusslip-hook is employed; but we would have it understood that we do not limit ourselves to this particular form of hook, and that the invention is equally applicable to buoys and other floating objects which require to be lowered at sea by means of tackle.

Figure 1 is alongitudinal section of a ships boat. Fig. 2 is a plan of the same, and Fig. 3 is a longitudinal section of a part of a ships boat on an enlarged scale.

A A are slip or tumbler hooks pivoted in frames, attached .by slings or otherwise to the bow and stern of the boat in the usual ma h ner. construction, and therefore need no particular description, as their action will be apparent from the drawings. These hooks are shown in Figs. 1 and 2 in position for suspension from the lowering-tackle, and are retained in that position by a rope or chain, B, attached to their. long arms a, and by a small tackle-line, 0, attached to a bight of said rope, so as to keep it constantly taut and act equally on both slip-hooks. This tackle-line 0 passes round sheaves and through guide-eyes, and is hooked onto a third slip-hook or trigger, D.

E is a float suspended overboard by a line, 6, passing through a hole,f, in the gunwale ot' the boat and attached to the slip-hook or trigger l), the weight of this float being sut'ficient in the air, but insufiicient in the-water, to prevent the slip-hook D releasing the line C under They are of ordinary and well-known the strain due to the weight of the suspended boat. In practice, a cork float resembling a life-buoy would be employed by preference, and the float would hang a short distance below the boat, so that it shall reach the water and relieve the slip-hook D of its weight before the boat is water-borne, thus allowing the weight of the still suspended boat to act on the slip-hooks A and cause them to become disengaged, as shown in Fig. 3.

What we claim is-- 1. The combination, with slip or disengaging hooks,operating substantially as specified, ot' a float or buoyant weight controlling another slip-hook or trigger to which the suspension hooks are connected, whereby they are automatically released at the proper moment, substantially as herein shown and described.

2. The combination, with the slip-hooks A,

adapted to be attached to a boat, and the ropes 20 Witnesss to the signature of Edward Jacob Hill:

JOHN DEAN, G. W. WEs'rLEY,

Both of 17 Greece/Lurch Street, London.

Witnesses to the signature of Josiah Latimer Clark:

JOHN DEAN, THoMAs LAKE, Both of 17 Gracechm'ch Street, London. 

